Stool



FIG. 1 is a first perspective view of a stool, slightly from above, showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a second perspective view thereof, slightly from below.

The broken lines shown represent environmental subject matter and form no part of the claimed invention. 

CLAIM The ornamental design for a stool, as shown and described. 